Std 1 & 2 Review

1. Std 1 & 2 Review

2. What three things do plant cells have that animal cells do not?

3. Cell wall • Chloroplast • Larger vacuole for water storage

4. Identify the organism. What would happen if structure #1 was damaged or did not function properly?

5. It is a Paramecium, and structure #1 is cilia. If this structure did not function, the organism would be unable to move to catch food or flee from predators.

6. Identify the type of cell present below. What is its function?

7. Red blood cell • Purpose is to transport oxygen throughout the body and pick up wastes

8. Identify the structures on the cell below. Is this a plant or animal cell? How do you know?

9. Animal Cell; • Plasma membrane only, no cell wall present

10. What is the organism below, and what is the purpose of structure #2? #2 #1

11. Euglena • Eyespot designed to detect light

12. All cells contain _____ DNA. All cells start out as _______ cells.

13. All cells contain identical DNA. All cells start out as stem cells.

14. What causes the creation of the cells below?

15. Differentiation

16. What is the name of the organism below, and what would happen if structure D did not function properly?

17. This is an Amoeba, and if structure D did not function properly the Amoeba would be unable to move to catch food. Structure D is a pseudopod.

18. What structure(s) do eukaryotes contain that prokaryotes do not?

19. A nucleus • Membrane bound organelles • Larger size • Complex internal structure

20. In which of these ways are prokaryotic and eukaryotic cells similar? • A. They both contain DNA. • B. They both contain a nucleus. • C. They are both highly complex. • D. They are both enclosed by a cell wall.

21. In which of these ways are prokaryotic and eukaryotic cells similar? • A. They both contain DNA. • B. They both contain a nucleus. • C. They are both highly complex. • D. They are both enclosed by a cell wall.

22. A single muscle cell is isolated observed. Which organelle would you expect to be abundant in the cell? • A. ribosomes • B. mitochondria • C. Golgi bodies • D. lysosomes

23. A single muscle cell is isolated observed. Which organelle would you expect to be abundant in the cell? • A. ribosomes • B. mitochondria • C. Golgi bodies • D. lysosomes

24. How do buffers help maintain homeostasis within a cell? • By regulating pH levels • By regulating water levels • By regulating temperature • By regulating glucose levels

25. How do buffers help maintain homeostasis within a cell? • By regulating pH levels • By regulating water levels • By regulating temperature • By regulating glucose levels

26. Which best summarizes the purpose of mitosis in multicellular organisms? • A. enabling growth • B. increasing variation • C. producing gametes • D. encouraging mutations

27. Which best summarizes the purpose of mitosis in multicellular organisms? • A. enabling growth • B. increasing variation • C. producing gametes • D. encouraging mutations

28. Which statement best describes mutations? • A. All mutations are harmful. • B. All mutations can be reversed. • C. All mutations change a cell’s DNA. • D. All mutations are caused by radiation.

29. Which statement best describes mutations? • A. All mutations are harmful. • B. All mutations can be reversed. • C. All mutations change a cell’s DNA. • D. All mutations are caused by radiation.

30. What happens if we place a red blood cell in a salt water solution?

31. What happens if we place a red blood cell in a salt water solution? Water moves out of the cell and shrinks, causing crenation.

32. How many and what type of cell are created after mitosis occurs?

33. How many and what type of cell are created after mitosis occurs? • 2 cells genetically identical to the parent cell

34. What type of reproduction and cell division would mammals go through?

35. What type of reproduction and cell division would mammals go through? • Sexual reproduction, meiosis

36. A saltwater plant is placed in a freshwater bucket of water. What will happen to the cell?

37. A saltwater plant is placed in a freshwater bucket of water. What will happen to the cell? • Water will move into the saltwater plant cell, causing it to swell; hypotonic solution

38. Which of these describes mutations that cause skin cancer and lung cancer? • A. They are somatic mutations and are passed from parent to offspring. • B. They are somatic mutations and are not passed from parent to offspring. • C. They are germ mutations and are passed from parent to offspring. • D. They are germ mutations and are not passed from parent to offspring.

39. Which of these describes mutations that cause skin cancer and lung cancer? • A. They are somatic mutations and are passed from parent to offspring. • B. They are somatic mutations and are not passed from parent to offspring. • C. They are germ mutations and are passed from parent to offspring. • D. They are germ mutations and are not passed from parent to offspring.

40. Giant sequoia trees are some of the largest living organisms. These massive trees can reach a height of more than 76 meters. Which structural adaptation makes it possible for leaf cells at the top of a giant sequoia to receive water from the ground?

41. Xylem

42. Which function would an algal cell not be able to perform if its chloroplasts were removed? • A. cellular respiration • B. protein synthesis • C. storage and transport • D. photosynthesis

43. Which function would an algal cell not be able to perform if its chloroplasts were removed? • A. cellular respiration • B. protein synthesis • C. storage and transport • D. photosynthesis

44. What is the meaning of the phrase “a gene is turned on”? • The protein the gene codes for is produced. • mRNA releases the gene into the cytoplasm • The corresponding section of DNA is replicated. • DNA transcription and replication are complete.

45. What is the meaning of the phrase “a gene is turned on”? • The protein the gene codes for is produced. • mRNA releases the gene into the cytoplasm • The corresponding section of DNA is replicated. • DNA transcription and replication are complete.

46. The picture below shows four different beak shapes in finches. A comparison of these four beak shapes would most likely be the focus of what type of study in finches? • A. a study of feeding adaptations • B. a study of digestive adaptations • C. a study of camouflage adaptations • D. a study of reproductive adaptations

47. The picture below shows four different beak shapes in finches. A comparison of these four beak shapes would most likely be the focus of what type of study in finches? • A. a study of feeding adaptations • B. a study of digestive adaptations • C. a study of camouflage adaptations • D. a study of reproductive adaptations

48. Which group of organisms is responsible for nitrogen fixation and denitrification? • A. fungi • B. plants • C. bacteria • D. humans

49. Which group of organisms is responsible for nitrogen fixation and denitrification? • A. fungi • B. plants • C. bacteria • D. humans

50. Barnacles are small crustaceans that attach themselves to the bodies of whales without harming or benefiting them. The barnacles travel with the whales. Which term best describes the relationship between the whales and the barnacles? • A. predation • B. mutualism • C. parasitism • D. commensualism